Robby
12-01-2005, 07:24 AM
Hi All,
I hope your not sick of my images yet!
Here's another of the Keyhole Neb in Carina. Taken last night after canning Saturn due to poor seeing.
I wanted to have another go at the Keyhole at f/10 as before I'd done it at f/6.3 and manual guiding.
Set it up, and found after a couple I was getting tracking errors due to my guide scope being f/5. So I put a 2.5x powermate in the guidescope and got it up to f/12.5. This helped alot, but the poor seeing started coming into play. Still it was not enough to destroy the image.
See attached... .:stargaze:
Details: 10x3mins exposures @ ISO1600
C8 f/10, guiding at f/12.5 with ToUCam, Starmate, & K3CCDTools.
Stacking, curves & levels in Photoshop. Very little post image processing.
I hope your not sick of my images yet!
Here's another of the Keyhole Neb in Carina. Taken last night after canning Saturn due to poor seeing.
I wanted to have another go at the Keyhole at f/10 as before I'd done it at f/6.3 and manual guiding.
Set it up, and found after a couple I was getting tracking errors due to my guide scope being f/5. So I put a 2.5x powermate in the guidescope and got it up to f/12.5. This helped alot, but the poor seeing started coming into play. Still it was not enough to destroy the image.
See attached... .:stargaze:
Details: 10x3mins exposures @ ISO1600
C8 f/10, guiding at f/12.5 with ToUCam, Starmate, & K3CCDTools.
Stacking, curves & levels in Photoshop. Very little post image processing.